267  
FNCA52 TJSJ 240801  
FWFSJU  
 
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO  
NATIONAL WEATHER SERVICE SAN JUAN PR  
401 AM AST SUN MAR 24 2019  
   
DISCUSSION
 
 
LESSER CLOUD COVER AND MOISTURE TRANSPORT IS EXPECTED ACROSS THESE  
AREAS TODAY ALONG WITH A CONTINUED DRYING TREND OF LOCAL FUELS.  
THIS ALONG WITH ENHANCED SEA BREEZES BETWEEN 15-20 MPH AND HIGHER  
GUSTS OF 25 MPH OR GREATER, RHS IN THE HIGH 30S TO LOW 40% LATER  
THIS MORNING AND AFTERNOON, ELEVATED FIRE CONDITIONS WILL BE LIKELY.  
THEREFORE, A FIRE DANGER STATEMENT HAS BEEN ISSUED TODAY FOR THE  
SOUTH COASTAL PLAINS OF PUERTO RICO.  
 
PRZ014-250815-  
SOUTHEAST COASTAL PLAINS-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLEAR PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 40 40  
TEMP (24H TREND) 91 (+3) 68 (-1) 90  
RH % (24H TREND) 37 (-10) 96 (+6) 49  
20FTWND-VAL/AM(MPH) E 10 E 12  
20FTWND-RDG/PM(MPH) SE 15 E 9 SE 15  
MIXING HGT(FT-AGL/MSL)8804 7255  
TRANSPORT WND (MPH) E 18 E 18  
VENT RATE (KT-FT) 112069 119576  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ015-250815-  
SOUTHERN HILLS-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 87 (+5) 67 (-1) 86  
RH % (24H TREND) 38 (-15) 97 (+6) 53  
20FTWND-VAL/AM(MPH) E 11 E 12  
20FTWND-RDG/PM(MPH) SE 14 E 8 SE 13  
MIXING HGT(FT-AGL/MSL)8684 7271  
TRANSPORT WND (MPH) E 17 E 17  
VENT RATE (KT-FT) 106745 116863  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ016-250815-  
NORTH COASTAL PLAINS-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 90 (+4) 70 (-2) 88  
RH % (24H TREND) 47 (-8) 94 (+8) 51  
20FTWND-VAL/AM(MPH) E 8 E 11  
20FTWND-RDG/PM(MPH) E 13 E 9 E 13  
MIXING HGT(FT-AGL/MSL)8650 7545  
TRANSPORT WND (MPH) E 14 SE 17  
VENT RATE (KT-FT) 111580 122284  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ017-250815-  
NORTHERN HILLS-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 50 30 60  
TEMP (24H TREND) 89 (+6) 67 (-1) 86  
RH % (24H TREND) 42 (-12) 100 (+8) 55  
20FTWND-VAL/AM(MPH) E 7 E 9  
20FTWND-RDG/PM(MPH) NE 9 E 6 E 8  
MIXING HGT(FT-AGL/MSL)8713 7546  
TRANSPORT WND (MPH) E 12 SE 14  
VENT RATE (KT-FT) 108823 112340  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ018-250815-  
WEST COAST-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 20 40  
TEMP (24H TREND) 86 (+3) 70 (0) 86  
RH % (24H TREND) 41 (-16) 90 (+3) 58  
20FTWND-VAL/AM(MPH) E 6 E 10  
20FTWND-RDG/PM(MPH) NE 7 NE 5 SE 10  
MIXING HGT(FT-AGL/MSL)8181 7412  
TRANSPORT WND (MPH) E 10 E 15  
VENT RATE (KT-FT) 95649 113794  
DISPERSION 5 5  
DSI 6 5 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ019-250815-  
EASTERN INTERIOR-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 88 (+3) 67 (-3) 88  
RH % (24H TREND) 46 (-6) 98 (+9) 51  
20FTWND-VAL/AM(MPH) E 8 E 10  
20FTWND-RDG/PM(MPH) E 11 E 7 SE 13  
MIXING HGT(FT-AGL/MSL)9075 7387  
TRANSPORT WND (MPH) E 15 SE 18  
VENT RATE (KT-FT) 110896 121207  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ022-250815-  
LUQUILLO MOUNTAIN RANGE-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 82 (+3) 67 (-2) 84  
RH % (24H TREND) 62 (0) 97 (+10) 56  
20FTWND-VAL/AM(MPH) E 9 E 11  
20FTWND-RDG/PM(MPH) E 11 E 9 SE 13  
MIXING HGT(FT-AGL/MSL)7281 6508  
TRANSPORT WND (MPH) SE 16 SE 20  
VENT RATE (KT-FT) 97114 114875  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ023-250815-  
CENTRAL MOUNTAIN RANGE-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 20 60  
TEMP (24H TREND) 86 (+8) 63 (-2) 83  
RH % (24H TREND) 40 (-18) 100 (+7) 59  
20FTWND-VAL/AM(MPH) E 7 E 10  
20FTWND-RDG/PM(MPH) E 7 E 6 SE 11  
MIXING HGT(FT-AGL/MSL)8729 7558  
TRANSPORT WND (MPH) E 12 SE 15  
VENT RATE (KT-FT) 96746 94264  
DISPERSION 5 5  
DSI 6 5 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ024-250815-  
CAYEY MOUNTAIN RANGE-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 83 (+2) 68 (-1) 86  
RH % (24H TREND) 53 (-4) 96 (+8) 53  
20FTWND-VAL/AM(MPH) E 9 E 11  
20FTWND-RDG/PM(MPH) E 12 E 8 SE 13  
MIXING HGT(FT-AGL/MSL)8035 6797  
TRANSPORT WND (MPH) E 15 E 18  
VENT RATE (KT-FT) 103666 109465  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ025-250815-  
VIEQUES-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 40  
TEMP (24H TREND) 84 (0) 77 (+1) 85  
RH % (24H TREND) 62 (-1) 85 (+7) 61  
20FTWND-VAL/AM(MPH) E 11 E 15  
20FTWND-RDG/PM(MPH) E 12 E 14 E 14  
MIXING HGT(FT-AGL/MSL)7264 6374  
TRANSPORT WND (MPH) E 16 SE 20  
VENT RATE (KT-FT) 101411 115214  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ026-250815-  
CULEBRA-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 40 30  
TEMP (24H TREND) 86 (+2) 76 (0) 85  
RH % (24H TREND) 61 (-1) 88 (+7) 61  
20FTWND-VAL/AM(MPH) E 12 E 16  
20FTWND-RDG/PM(MPH) E 12 E 15 E 15  
MIXING HGT(FT-AGL/MSL)7394 6360  
TRANSPORT WND (MPH) E 16 SE 21  
VENT RATE (KT-FT) 104158 115150  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ027-250815-  
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLEAR PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 10 20 30  
TEMP (24H TREND) 90 (+5) 69 (-1) 89  
RH % (24H TREND) 33 (-19) 91 (+4) 50  
20FTWND-VAL/AM(MPH) E 9 E 14  
20FTWND-RDG/PM(MPH) SE 13 E 8 SE 16  
MIXING HGT(FT-AGL/MSL)8595 7405  
TRANSPORT WND (MPH) E 14 E 18  
VENT RATE (KT-FT) 106406 121441  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
VIZ001-250815-  
SAINT THOMAS AND SAINT JOHN-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 30 30  
TEMP (24H TREND) 85 (+1) 72 (-1) 85  
RH % (24H TREND) 61 (+1) 90 (+5) 59  
20FTWND-VAL/AM(MPH) E 12 E 15  
20FTWND-RDG/PM(MPH) E 13 E 15 SE 15  
MIXING HGT(FT-AGL/MSL)7429 6422  
TRANSPORT WND (MPH) E 16 SE 22  
VENT RATE (KT-FT) 104988 121219  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 2 2  
 
REMARKS...NONE.  
 

 
 
VIZ002-250815-  
ST CROIX-  
401 AM AST SUN MAR 24 2019  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 30 30  
TEMP (24H TREND) 86 (+2) 72 (0) 85  
RH % (24H TREND) 60 (+1) 90 (-1) 57  
20FTWND-VAL/AM(MPH) E 11 E 14  
20FTWND-RDG/PM(MPH) E 13 E 13 E 14  
MIXING HGT(FT-AGL/MSL)7383 6531  
TRANSPORT WND (MPH) E 17 E 24  
VENT RATE (KT-FT) 112867 136148  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 2 2  
 
REMARKS...NONE.  
 

 
 

 
 
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